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The rate at which households, firms, and investors anticipate prices will rise in the future, which shapes wage demands, pricing decisions, and monetary policy.
Inflation expectations are forecasts—formal or informal—of future price growth held by economic actors. They matter because expectations are partly self-fulfilling: if workers expect 5% inflation, they bargain for higher wages; if firms expect rising input costs, they raise prices preemptively; if bondholders expect inflation, they demand higher nominal yields. Central banks therefore treat the anchoring of expectations near their inflation target as a core policy objective.
Economists typically distinguish three horizons and sources:
Theoretical frameworks vary. Adaptive expectations, associated with Milton Friedman and Phillip Cagan, assume agents extrapolate from past inflation. Rational expectations, formalized by John Muth (1961) and developed by Robert Lucas in the 1970s, assume agents use all available information consistently with the underlying economic model. More recent work on behavioral and heterogeneous expectations stresses inattention and demographic variation.
Anchoring became central to policy after the 1970s stagflation, when the Volcker Federal Reserve aggressively tightened to break entrenched expectations. The 2021–2023 global inflation surge revived the debate: the Fed, ECB, and Bank of England all justified rapid rate hikes by warning that prolonged high inflation could de-anchor long-run expectations. Most major central banks now publish expectations data alongside CPI prints, and the IMF's World Economic Outlook routinely tracks whether expectations remain consistent with stated targets.
Through household and firm surveys, professional forecaster surveys, and market-based indicators such as breakeven rates derived from inflation-linked bonds and inflation swaps.
Expectations are anchored when long-run forecasts remain close to the central bank's target despite short-term shocks to actual inflation, signaling credibility of monetary policy.
Because expectations influence wage-setting, price-setting, and interest rates today, they can become self-fulfilling and make inflation more persistent and costly to reverse.